Initially pre-ordered from Amazon, but the f'ed it up. So, I ended up getting one from MPEX.com (which I highly recommend).

I came from a Canon 5Dc and have used a Mark II here and there. This camera is a big step forward in the right direction. First the build quality great and feels good in the hands. There is a little rubber area for your thumb on the back that is great.

Next the AF system. Wow! What an upgrade from my 9 Points on my 5Dc. I have played around with it tracking animals and such. With my old 5D I probably got around 45% in focus. Now I get around 70-80% in focus. But I am still reading the book to understand all of the different AF functions.

Being able to customize the buttons is a great feature I did not have on my 5Dc. The zoom button was moved for some reason and do not like how it is now. So I moved zoom to the set button.

Dual CF + SD card is awesome. Touch pad controls on dial while recording a movie is genius. Same battery as Mark II is a great thing.

I regretting paying $3500 for the camera at first. But when I got it in my hands and saw what it was capable of, it was worth it.